AD620 Chips Voltage Amplifier Single-Ended Differential Instrumentation Amplifier High Voltage Amplifier
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| Module name | AD620/623 Instrument Programmable Amplifier |
| Module size | 50mm X 50mm |
| Fixed output voltage | 5V-10V (default delivery 5V) |
Module bandwidth: AD620/623 is lower than 50KHz at high gain and greater than 1MHz at low gainModule power supply: 5V-24V can be, but it depends on the baby's voltage output (if the customer requires 5V voltage output, then the AD62X series chip is about 3.8V power supply, the voltage regulator chip has a voltage difference, so it is recommended to be higher than 12V Single power supply is better)
Module input signal type: single-ended signal or differential signal
The maximum magnification of the module: more than 2000 times (measured), due to the gain of the assembly caused by the fluctuation of the waveform band, it is recommended to use multi-stage amplification for high gain.
Module saturation output amplitude: AC peak value is 10Vpp (±5Vpp)
Modular Features: The AD620 is a low cost, high precision instrumentation amplifier that requires only one external resistor to set the gain from 1 to 10,000. This module can be enlarged by 1000 times, the circuit layout is regular, the MINI, the design layout and wiring are reasonable, the materials are generous, suitable for project development and student competition. The store's latest AD620 has two models, one for the fixed gain version (with metal shield cover), the other for the adjustable gain version (without metal shield cover), both models have a fixed voltage output, the store to meet The customer needs, when it is shipped, it does not weld, but it is equipped with a shielding cover + sliding, and the user can choose according to his own needs.
Application Suggestions: 1. This module is suitable for amplification of signals above 100 microvolts. In addition, although the maximum magnification given in the official manual is 10,000 times, this value cannot be achieved in actual use. Different frequencies The amplification effect of the input signal of different sizes may be different. The actual amplification factor is affected by the gain bandwidth product and the power supply voltage, that is, the maximum output of the operational amplifier does not exceed the power supply voltage.
2. The amplifier's gain-bandwidth product (designated as GBWP, GBW, GBP, or GB) is the product of the amplifier's bandwidth and bandwidth gain, and is a parameter used to simply measure the performance of the amplifier. The gain bandwidth product is a constant when the frequency is large enough. For example, the gain bandwidth product of the AD623 is 800KHz, which means that when the frequency is 800Khz, the gain of the device drops to unity gain. That is, A=1 at this time. Also note that this amplifier can operate at up to 800KHz without distorting the input signal. Since the product of gain and frequency is deterministic, it can only operate at up to 80 kHz when the same device needs to get 10 times the gain.
The main features
Low power consumption: 1.3mA(max) | High precision: 40× 10-6 (max)
Wide Supply Voltage Range: ±2.3~±18V | Instrumentation Amplifier with Better Performance Than Three Op Amp Structures
Excellent dc characteristics! Low input offset voltage: 125 μV(max)
Low input offset voltage drift: 1 pV/C(max) | Low input bias current: 2.0nA(max)
Common mode rejection ratio is high: 93dB (min; G=10) | Noise voltage is low: 0.28pVP-P (0.1~10Hz)
Bandwidth: 120kHz (G=100) | Short Settling Time (up to 0.01%) 15μs
Excellent AC Characteristics! 8-pin DIP and SOIC Package Structure
Technical Parameters
Recommended Value: Supply Voltage: ±15V
Supply current: 0.9mA
Short circuit current: ±18mA
Conversion rate: 1.5V/ps
Working temperature (C grade): -40~85°C
Limit value: Supply voltage: ±18.0V
Storage temperature (C grade) -65~150°C
Internal power consumption: 650mW
Common-mode input voltage: ±vs
Differential mode input voltage: ±25V
Output short circuit duration: unlimited